diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 65614f7..a9da5dc 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,12 +22,12 @@ jobs:
         run: |
           git config --global url."https://x-access-token:${RELEASES_TOKEN}@github.com/GoCodeAlone/".insteadOf "https://github.com/GoCodeAlone/"
           go env -w GOPRIVATE=github.com/GoCodeAlone/*
-      - name: Install wfctl v0.62.0
+      - name: Install wfctl v0.63.1
         run: |
           mkdir -p "${RUNNER_TEMP}/wfctl-bin"
           curl -sSfL -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
             -o "${RUNNER_TEMP}/wfctl-bin/wfctl" \
-            "https://github.com/GoCodeAlone/workflow/releases/download/v0.62.0/wfctl-linux-amd64"
+            "https://github.com/GoCodeAlone/workflow/releases/download/v0.63.1/wfctl-linux-amd64"
           chmod +x "${RUNNER_TEMP}/wfctl-bin/wfctl"
       - name: Validate plugin contract for publish (pre-build)
         run: "${{ runner.temp }}/wfctl-bin/wfctl plugin validate-contract --for-publish --tag ${{ github.ref_name }} ."
@@ -50,6 +50,19 @@ jobs:
       && !contains(github.ref_name, '-')
       && github.repository == 'GoCodeAlone/workflow-plugin-compute'
     steps:
+      # workflow#765: runtime truth-check via plugin verify-capabilities.
+      - name: Verify capabilities (runtime truth-check)
+        run: |
+          RUNNER_ARCH=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')
+          BIN=$(jq -r --arg arch "$RUNNER_ARCH" \
+            '[.[] | select(.type=="Binary" and .goos=="linux" and .goarch==$arch and (.name|startswith("workflow-plugin-compute")))] | .[0].path // ""' \
+            dist/artifacts.json)
+          if [ -z "$BIN" ] || [ "$BIN" = "null" ]; then
+            echo "::warning::No matching linux/$RUNNER_ARCH binary in dist/artifacts.json; skipping verify-capabilities"
+            jq '.[] | {name, type, goos, goarch, path}' dist/artifacts.json
+            exit 0
+          fi
+          "${{ runner.temp }}/wfctl-bin/wfctl" plugin verify-capabilities --binary "$BIN" .
       - name: Trigger registry manifest sync
         uses: peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697  # v4
         with: